Photo Credits: (clockwise from top left)
Frederick Douglass Home, Washington, D.C. (Walter Smalling,
Jr.); Francis Canyon Ruin, Blanco vicinity, Rio Arriba
County, New Mexico (John Samuelson); Main Street/Market Square
Historic District, Houston, Harris County, Texas(Paul
Hester); Bridge in Cherrytree Township, Venago County,
Pennsylvania (Pennsylvania Department of Transportation)Note:Except for the above illustrations, the photographs
and captions found in the printed version of How to Apply
the National Register Criteria are omitted from this electronic
version.